The following links provide information and technical guidance for software developers and transmitters who are interested in developing software for the Modernized e-File Form 1041. You will find the XML Schemas, Business Rules, and other useful information separated by tax year. Production & Acceptance Testing System (ATS) - Current Valid Schemas Tax Year Form Type 2020 1041 2019 1041 2018 1041 2017 1041 Back to MeF Business Rules and Schemas page
